Tank Volume Calculator

Water Storage Tank Tool

Tank Volume Calculator

Select a tank shape, enter the dimensions, and calculate total tank capacity. Add a fill depth to estimate the current liquid volume.

Horizontal Cylinder Tank

Dimensions can use different units. Results are shown in US gallons by default.

Estimated Tank Volume

Tank capacity -- US gallons
Filled volume -- Enter a fill depth
Percent full -- Based on entered fill depth

Calculations are geometric estimates. Actual usable capacity can vary because of wall thickness, fittings, freeboard, manufacturer tolerances, and internal components.

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